Form 4 · Filed May 21, 2026, 08:30 PM UTC
ACMR/ACM Research, Inc.
Dun Haiping — director
AI Thesis
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Research signal, not investment advice. Form 4 AI surfaces SEC filings and applies an analytical layer — it does not predict prices or recommend trades. Past performance does not guarantee future results. See methodology and public track record for how scores are computed.
Transactions
6 rows| Date | Code | Direction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| May 19, 2026 | M | other | 5,000 | $6 | $28,000 | 5,000 |
| May 19, 2026 | S | sell | 1,333 | $64 | $85,099 | 3,667 |
| May 19, 2026 | S | sell | 500 | $65 | $32,545 | 3,167 |
| May 19, 2026 | S | sell | 1,309 | $67 | $87,978 | 1,858 |
| May 19, 2026 | S | sell | 1,858 | $68 | $125,489 | 0 |
| May 19, 2026 | M | other | 5,000 | — | — | 50,000 |
Source: SEC EDGAR raw filing ↗ · Accession 0001140361-26-022458